A B C or D about tropical cyclone...

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m